docs: broken paths to files

[kseniaeremekno]

Hey! You have broken paths in your links.

1. https://github.com/ChainSafe/lodestar/blob/477ac9b15b4d25989554db705fcacb21c12e89e8/docs/pages/faqs.md?plain=1#L20 2.https://github.com/ChainSafe/lodestar/blob/477ac9b15b4d25989554db705fcacb21c12e89e8/docs/pages/index.md?plain=1#L13 3.https://github.com/ChainSafe/lodestar/blob/477ac9b15b4d25989554db705fcacb21c12e89e8/docs/pages/index.md?plain=1#L18

[Beutife]

Hello @philknows , i would love to take this up, and I'll also appreciated it, if more light can be shed to the issue thank you